Hi, I'm sorry to revive my post but I can't to solve my problems and I see anything in the log. I have tried with Hammer version and I found the same phenomena. In fact, first, I have tried the same installation (ie the same conf via puppet) of my cluster but in "virtualbox" environment and I have the same phenomena. Second, I have reinstalled my "virtualbox" environment but with the Hammer version of Ceph (ie the testing version 0.93-1trusty) and I have the same issues too. Le 04/03/2015 14:15, Francois Lafont wrote : [...] > ~# mkdir /cephfs > ~# mount -t ceph 10.0.2.150,10.0.2.151,10.0.2.152:/ /cephfs/ -o name=cephfs,secretfile=/etc/ceph/ceph.client.cephfs.secret > > Then in ceph-testfs, I do: > > root@test-cephfs:~# mkdir /cephfs/d1 > root@test-cephfs:~# ll /cephfs/ > total 4 > drwxr-xr-x 1 root root 0 Mar 4 11:45 ./ > drwxr-xr-x 24 root root 4096 Mar 4 11:42 ../ > drwxr-xr-x 1 root root 0 Mar 4 11:45 d1/ > > After, in test-cephfs2, I do: > > root@test-cephfs2:~# ll /cephfs/ > total 4 > drwxr-xr-x 1 root root 0 Mar 4 11:45 ./ > drwxr-xr-x 24 root root 4096 Mar 4 11:42 ../ > drwxrwxrwx 1 root root 0 Mar 4 11:45 d1/ > > 1) Why the unix rights of d1/ are different when I'm in test-cephfs > and when I'm in test-cephfs2? It should be the same, isn't it? This problem is not random and I can reproduce it indefinitely. > 2) If I create 100 files in /cephfs/d1/ with test-cephfs: > > for i in $(seq 100) > do > echo "$(date +%s.%N)" >/cephfs/d1/f_$i > done > > sometimes, in test-cephfs2, when I do a simple: > > root@test-cephfs2:~# time \ls -la /cephfs Sorry error of copy and paste, of course it was: root@test-cephfs2:~# time \ls -la /cephfs/d1/ > the command can take 2 or 3 seconds which seems to me very long > for a directory with just 100 files. Generally, if I repeat the > command on test-cephfs2 just after, it's immediate but not always. > I can not reproduce the problem in a determinist way. Sometimes, > to reproduce the problem, I must remove all the files in /cephfs/ > on test-cepfs and recreate them. It's very strange. Sometimes and > randomly, something seems to be stalled but I don't know what. I > suspect a problem of mds tuning but, In fact, I don't know what > to do. I have the same problem with hammer too. But someone can confirm me that 3s (not always) for "ls -la" in a cephfs directory which contains 100 file it's pathological? After all, maybe is it normal? I don't have much experience with cephfs. Thanks for your help. -- François Lafont _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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